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 Gemini 2.5 Pro |  GPT-5.6 SolOpenAI | GPT-4.1 OpenAI | o3 OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | OpenAI | OpenAI | |
| Family | Gemini | GPT | GPT | o-series |
| Release date | 2025-03-25 | 2026-06-26 | 2025-04-14 | 2025-04-16 |
| Context window | 2,000,000 tokens | — | 1,000,000 tokens | 200,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision, audio, video | text, vision, audio | text, vision | text, vision |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | Predecessor to Gemini 3 Pro. | Flagship of OpenAI's GPT-5.6 three-model suite (Sol / Terra / Luna), released as a limited preview. Strong gains in coding, cybersecurity, biology, and long-horizon agentic work. Pricing: $5 / $30 per million input/output tokens. | — | Reasoning-focused model in the o-series. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | 84.1% | — | — | — |
| GPQA-D | 84.0% | — | — | 87.7% |
| AIME-25 | — | — | — | 88.9% |
| MMMU | 72.4% | — | — | — |
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GPT-5.6 Sol✓
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Mistral Large 2maxMax 4 models. Remove one to add another.